Equipment unit · VIN-decoded · NHTSA vPIC

2021 Kenworth T680

1XKYD49X4MJ434442 · Truck-Tractor · TRUCK
Carriers run under1
24 mo
Inspections13
all-time
OOS inspections4
of 13
First seenNov 7, 2023
AR
Last seenNov 24, 2025
TN
01

Decoded identity

From the 17-character VIN via NHTSA vPIC

VIN
1XKYD49X4MJ434442
Make
Kenworth
Model
T680
Model year
2021
Body class
Truck-Tractor
Vehicle type
TRUCK
GVWR
Class 8: 33,001 lb and above (14,969 kg and above)
Decoded at
Jun 16, 2026
vPIC returns make / model / year / body class / GVWR. Fields it does not resolve are shown as Not decoded rather than guessed.
Decode evidence & sources

Deterministic structure

These fields come directly from VIN positions and the published checksum calculation, with zero store IO.

World manufacturer identifier
1XK

Deterministic · VIN positions 1–3.

Vehicle descriptor section
YD49X

Deterministic · VIN positions 4–8.

Check digit
4 · valid

Deterministic · position 9; calculated value 4.

Model year candidates
1991 or 2021

Position 10 repeats every 30 years; both candidates are retained and neither is silently selected.

North American serial sequence
434442

Deterministic · positions 12–17 for a North American WMI.

Sourced platform inference

The prefix store publishes only at support ≥ 3 and purity ≥ 90%. Prefix confidence is shown beside every established platform claim.

Make
KENWORTH

Prefix basis · 43,483 decoded VINs at 100.0% prefix purity.

Model
T680

Prefix basis · 43,483 decoded VINs at 100.0% prefix purity.

Model line
Not established

No sourced model-line label is established.

No source established for this field.

Generation
Not established

No sourced generation label is established.

No source established for this field.

Cab type
Not established

No sourced cab label is established.

No source established for this field.

Federal observation (NHTSA vPIC)

What the federal corpus observed directly for this exact VIN — independent of, and sometimes more specific than, the prefix-level inference above.

Observed model year
2021

Observed directly for this VIN via NHTSA vPIC.

Observed make
KENWORTH

Observed directly for this VIN via NHTSA vPIC.

Observed model
T680

Observed directly for this VIN via NHTSA vPIC.

Observed body class
Truck-Tractor

Observed directly for this VIN via NHTSA vPIC.

Observed vehicle type
TRUCK

Observed directly for this VIN via NHTSA vPIC.

GVWR
Class 8: 33,001 lb and above (14,969 kg and above)

Observed directly for this VIN via NHTSA vPIC.

Not established

  • model line
  • generation
  • cab type

These are withheld claims, not negative findings.

02

Inspection history

Every roadside inspection of this VIN, newest first · Nov 7, 2023 – Nov 24, 2025

DateStateLevelViol.OOSCarrier (DOT)Plate
Nov 24, 2025TNI · Full0DX XPRESS INC 2128019R785410/TX
Aug 20, 2025AZI · Full3OOSDX XPRESS INC 2128019R785410/TX
Jul 9, 2025AZII · Walk-around2OOSDX XPRESS INC 2128019R688936/TX
Jun 18, 2025NMII · Walk-around0DX XPRESS INC 2128019R688936/TX
May 5, 2025CAI · Full1DX XPRESS INC 2128019R688936/TX
Apr 20, 2025NMII · Walk-around0DX XPRESS INC 2128019R688936/TX
Jan 21, 2025TXII · Walk-around0DX XPRESS INC 2128019R688936/TX
Jan 13, 2025TNI · Full0DX XPRESS INC 2128019R688936/TX
Nov 15, 2024NMII · Walk-around1OOSDX XPRESS INC 2128019R688936/TX
Oct 27, 2024NMII · Walk-around0DX XPRESS INC 2128019R688936/TX
Aug 12, 2024NMII · Walk-around1DX XPRESS INC 2128019R688936/TX
Dec 11, 2023KYI · Full0DX XPRESS INC 2128019R688936/TX
Nov 7, 2023ARI · Full1OOSDX XPRESS INC 2128019R688936/TX
03

Carriers this unit has run under

1 distinct carrier · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
DX XPRESS INC2128019Nov 7, 2023Nov 24, 202513TX
Names are left-joined from the FMCSA census; a DOT with no census match falls back to its number.
04

Plate & unit-number history

The same truck under different plate registrations across carriers

PlateState / prov.Unit no.CarrierDate rangeInsp.
R785410TXDX XPRESS INCAug 20, 2025Nov 24, 20252
R688936TXDX XPRESS INCNov 7, 2023Jul 9, 202511
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jun 16, 2026